DE2826735A1 - DISHWASHER - Google Patents

Description

EBHZ-78/36 June 15, 1978

Ul / kt

Licentia

Patent-Verwaltungs-GmbH

Frankfurt / Main

dishwasher

The invention relates to a dishwasher according to the preamble of claim 1.

In a known dishwasher (DE-OS 22 11 310) with a washing container, two crockery baskets arranged one above the other and two spray arms fed by a circulating pump, the spray jet pressure is achieved by adjusting one in the Pressure port of the circulation pump provided throttle changeable. This destroys pump energy and the radiation intensity changed throughout the machine.

To in a dishwasher with two spray arms fed by a circulation pump with reduced water and Energy consumption to achieve a good cleaning result, a method for cleaning dishes is known (DE-AS 24 28 991),

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in which the spray arms alternate at least during a wash cycle are connected one after the other in cycle times to the circulation pump and which are connected to a spray jet cycle of a Spray arm following spray pause for the duration of the softening of the contamination of the previously by this spray arm sprayed dishes is measured.

The object of the invention is to provide a dishwasher of the type mentioned at the beginning which is suitable for carrying out this method Art to create without being able to be carried out with the smaller amount of water in the rinsing tank and a weaker circulation pump alternating flushing through the upper and lower spray arm vibrations and an annoying noise development when steering of the water flow occur.

The solution to this problem according to the invention is the characteristic of claim 1 can be found.

Appropriate refinements are given in the subclaims.

Through the invention, the water flow is from the delivery line the circulating pump is passed through the inlet connection into the housing of the switching device and through the distributor wing to the upper or lower spray arm or divided into equal or unequal partial flows directed to both spray arms, whereby through the transition of the individual positions no jerky opening and closing the waterways takes place. The water flow is diverted from one direction of flow to the other continuously and shock-free, as there is always one waterway in the same area in the closing or opening areas of the waterways The extent to which the other waterway is throttled or shut off is opened.

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In the drawing, exemplary embodiments of the subject matter of the invention are shown schematically.

Show it:

Fig. 1 is a plan view of a switching device

according to the invention,

Fig. 2 is arranged in the delivery line or in the inlet connection of the switching device Radial wheel to drive the distributor vane,

3 shows an arranged in the conveying line or in the inlet connection of the switching device Axial gear to drive the distributor vane.

The one to control the water flow, from a circulation pump (not shown) to the spray arms of the dishwasher the switching device connected to the delivery line of the circulation pump consists of a housing forming a cylindrical box 1, on the cylinder jacket of which an inlet nozzle 2 and two outlet nozzles 3, 4 are attached. The one from the delivery line of the circulation pump via the inlet connection 2 into the housing 1 The flowing water stream is supplied by a distributor blade 6 which is rotatably or pivotably mounted on an axis 5 of the housing one of the drainage nozzles 3 or 4 deflected.

The arrangement of the distributor wing and the assignment of the drainage nozzles to the inlet connection are made so that transitions are provided in the switching areas of the waterways, in those of the distributor wing to the extent that it has one waterway closes the other waterway at the same time, so that in the transition zones both waterways are always partially

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are open. According to the embodiment shown in Figure 1 with a 360 ° rotatable distributor blade 6 is in a Circulation of the distributor wing each drain port 3, 4 twice opened for water flow. Are the drain nozzles facing each other at 180 ° at the pivot point of the distributor wing arranged at 90 ° to the inlet connection, this results in equally long flow times, i.e. working phases for the spray arms. If the angle between the outlet connection and the inlet connection is changed, then for the upper and lower Spray arm different spray times can be specified. By stopping the distributor wing in the middle position between the spray arms with the same partial flows can connect the discharge nozzle can be loaded at the same time.

The drive of the distributor blade 6 can be carried out by a water flow the circulation pump driven impeller, a radial or an axial wheel 8 with appropriate gear parts, according to the drawing, the impellers are arranged in the inlet connection 2 are.

According to another embodiment, the distributor vane can be driven by an electric motor with gearbox on its axis 5 or by a Electromagnets are driven with stepping mechanism. Furthermore, the circulation pump motor can be used to drive, including transmission elements how friction and gears etc. come.

Finally, a spray arm, in particular the lower spray arm serve. This drive is designed in such a way that the lower spray arm drives the distributor vane with its rotary movement during its working phase and at the same time pulls up an energy store or a return

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EBHZ-78/36 June 15, 1978

UlAt

Actuator pretensioned. The distributor wing is adjusted until the end of the work phase of the lower spray arm so that it diverts the flow of water to the upper spray arm and initiates its work phase while a spray jet pause for the lower spray arm begins. During this spray jet pause of the lower spray arm, the restoring element takes over the adjustment of the Distributor wing and at the beginning of the spray jet pause of the upper spray arm again leads a work phase of the lower spray arm a.

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Claims (5)

EBHZ-78/36 June 15, 1978 Ul / kt Expectations Iy dishwasher with a circulation pump, a washing container with two crockery baskets arranged one above the other, fed by the circulation pump, below or above each Crockery basket rotatably arranged spray arms and a switching device via which the spray arms alternate one after the other can be connected to the circulating pump, characterized in that the switching device consists of a housing (1), with an inlet connection (2) on the delivery line of the circulation pump and with two outlet connections (3, 4) on the feed lines to the Spray arms connected and in which a rotatable or pivotable, driven distributor wing (6) is mounted, which the Water flow from the inlet connection (2) to one of the drain connection (3 or 4) or in a steady transition when closing one and opening the other flow path to partial flows redirects both drainage nozzles. 2. Dishwasher according to claim 1, characterized in that the housing (1) consists of a cylindrical Can with arranged on the cylinder jacket pipe (2, 3, 4) and that the drain pipe (3, 4) an angle up to Include 180 ° while the inlet connector (2) is provided on the other jacket section. 3. Dishwasher according to claim 1, characterized in that the distributor wing (6) has its own Motor, a step magnet or by the running circulation pump and via a gear, a belt drive or the like. Drivable is. 909851/0488 ORIGINAL INSPECTED EBHZ-78/36 June 15, 1978 Ul / kt 4. Dishwasher according to claim 1, characterized in that in the inlet connection (2) or the conveying line an impeller (7, 8) which can be rotated by the water flow is arranged on the circulation pump and with the distributor blade (6) is in drive connection. 5. Dishwasher according to claim 1, characterized in that the distributor wing in the from Water flow acted upon work phase of the lower rotatable spray arm through this and a gear in the Water flow to the upper spray arm deflecting position can be moved and an energy storage device of a return element can be charged is that the distributor wing until the end of the work phase of the upper spray arm back into the starting position that releases the water flow to the lower spray arm. or moved on. 909861/0488